汽车发动机冷却案例.doc

毕 业 论 文 题 目: 生 专　 业指导教师 完成日期 年月 汽车发动机冷却系统的维护 学 生： 指导教师： 冷却系统?? 冷却系统维护?? 温度设定点?? 冷却系统智能控制The modern automobile repair technology has more and more high, from electronic products in automotive applications, to the modern automobile diagnosis equipment for use in automotive repair information, Internet applications, as well as the repair management software in enterprise of vehicle maintenance and repair role, embodies the high-tech features of modern automobile repair. Auto repair is no longer a simple parts to repair, replace sb. Is more delicate parts repair. After joining the WTO, pay attention to enterprise oneself quality rise, ability makes our country auto repair industry to obtain rapidder development. At present, traditional festival temperature, insulation screens and cooling fans are still widely used in domestic automotive engine cooling system. The traditional festival temperature control cooling liquid size circular route, throttle loss, unreliable work, work efficiency is low, cannot according to engine heat dissipation requirements for accurately regulating cooling system cooling capacity; the traditional thermal insulation curtain is artificially controlled radiator ventilation; conventional cooling fan driven by the crankshaft of the engine, the cooling only with the engine speed changes, can not meet the actual requirement of heat dissipation. And the three movements are not linked, low work efficiency, high fuel waste, does not adapt to the development of the modern automobile technology. In view of the present automobile engine cooling system malpractice, from the sensitivity, reliability, and engine power performance and economic considerations, should be temperature, insulation screens and cooling fan to achieve multiple joint control, the traditional cooling fan for electric cooling fan; traditional thermostat device to control temperature section device; adding electric control air guide pla